Differential Contributions of the Left and Right Inferior Parietal Lobules to Number Processing

Chochon, F; Cohen, Laurent; Moortele, Pierre-François Van de; Dehaene, Stanislas

doi:10.1162/089892999563689

Cited by 524 publications

(445 citation statements)

References 49 publications

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“…The bilateral inferior parietal area is considered an important region for quantity processing and is independent of input-output channels and tasks (e.g., Chochon, Cohen, van de Moortele, & Dehaene, 1999). In addition, we also found that numbers and dot arrays had greater activation in the prefrontal cortex than did numeral classifiers and tool nouns.…”

Section: Discussionsupporting

confidence: 59%

Neural correlates of quantity processing of numeral classifiers.

Cui¹,

Yu²,

Hong³

et al. 2013

Neuropsychology

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Objective: Classifiers play an important role in describing the quantity information of objects. Few studies have been conducted to investigate the brain organization for quantity processing of classifiers. In the current study, we investigated whether activation of numeral classifiers was specific to the bilateral inferior parietal areas, which are believed to process numerical magnitude. Method: Using functional MRI, we explored the neural correlates of numeral classifiers, as compared with those of numbers, dot arrays, and nonquantity words (i.e., tool nouns). Results: Our results showed that numeral classifiers and tool nouns elicited greater activation in the left inferior frontal lobule and left middle temporal gyrus than did numbers and dot arrays, but numbers and dot arrays had greater activation in the middle frontal gyrus, precuneus, and the superior and inferior parietal lobule in the right hemisphere. No differences were found between numeral classifiers and tool nouns. Conclusion: The results suggest that quantity processing of numeral classifiers is independent of that of numbers and dot arrays, supporting the notation-dependent hypothesis of quantity processing.

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Section: Discussionsupporting

confidence: 59%

Neural correlates of quantity processing of numeral classifiers.

Cui¹,

Yu²,

Hong³

et al. 2013

Neuropsychology

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“…This idea has been supported by some studies (e.g., Chochon et al, 1999;Dehaene et al, 1999;Lee, 2000;Simon et al, 2002), but not others (e.g., Andres et al, 2011;Dehaene et al, 1996;Delazer and Benke, 1997;Pesenti et al, 2000;Tucha et al, 1997;Van Harskamp et al, 2002;Zhou et al, 2007). For example, several studies have found that injuries to the angular gyrus or even the removal of this brain region did not affect subjects' performance on multiplication (e.g., Delazer and Benke, 1997;Tucha et al, 1997;van Harskamp et al, 2002).…”

Section: Geom > Tool Conjunctionmentioning

confidence: 97%

Neural correlates of numbers and mathematical terms

2012

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Numerical processing has been demonstrated to be subserved typically by the brain regions around the bilateral intraparietal sulcus (IPS). The goal of the current study was to investigate whether the processing of mathematical terms shared the same brain regions with numerical processing. Healthy adult participants performed semantic distance judgment tasks on five types of materials, including geometric terms, algebraic terms, linguistic terms, words for tools and other common objects, and Arabic numbers. Brain activation was measured with functional magnetic resonance imaging (fMRI). The results showed that geometric terms had greater activation than algebraic terms, linguistic terms and tool words in the horizontal IPS, but algebraic terms did not have greater activation than linguistic terms and tool words in this region. Arabic numbers showed greater activation than non-number materials (including geometric terms, algebraic terms, linguistic terms and tool words) in the bilateral IPS, right inferior frontal gyrus and bilateral middle frontal gyrus, but the non-number materials showed stronger activation in the left inferior frontal gyrus and left middle temporal gyrus. These results suggest that the brain area for the processing of numbers (the left IPS) seems to be involved in semantic processing of geometric terms, but not that of other mathematical terms such as algebraic terms. Both algebraic and geometric terms share similar brain organization with basic semantic processing in the left temporal and frontal regions.

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“…The cortical areas in patients with brain injury that have been studied by neural-imaging and the results accepted in the literature have shown that areas of the parietal lobe with involvement of the temporal areas and intraparietal sulcus, can be more susceptible to cause isolated mathematical changes 12,13 . however, broad cortical injuries that also involve regions proximal to the left temporal cortex, left and right parietal and frontal lobe, are susceptible to conduct concomitant language disorders and numerical and calculating processing [13][14][15][16] .…”

mentioning

confidence: 99%

“…however, broad cortical injuries that also involve regions proximal to the left temporal cortex, left and right parietal and frontal lobe, are susceptible to conduct concomitant language disorders and numerical and calculating processing [13][14][15][16] .…”

mentioning

confidence: 99%

Performance of a Brazilian population in the EC 301 calculation and number processing battery: a pilot study

Luccia¹,

Ortiz

2009

Arq. Neuro-Psiquiatr.

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-Background: From a neuropsychological point of view calculation is a very complex function. A simple arithmetic operation demands many neurocognitive mechanisms that involve verbal, spatial and graphical processing, memory and attention. Objective: To verify the calculation and number processing of healthy subjects and the effect of gender, age and schooling on their performance. Method: Forty-four normal subjects without complaints or neurological changes were evaluated. Results: The educational level was significantly linked to performance in the majority of tests of the EC 301 battery, whereas no differences were noted regarding age and gender. Conclusion: Evaluation of the data of the healthy population shown in this study indicated that educational level can affect calculation and number processing, It is possible to note that battery EC 301 demonstrated sensitivity for appraisal of these abilities and therefore can be employed for clinical assessment in calculation and number disorders.KEy words: mathematics, population characteristics, calculation ability, numerical knowledge, acalculia. desempenho da população brasileira no processamento numérico e de cálculo através da bateria ec 301: estudo piloto resumo -Introdução: o cálculo do ponto de vista neuropsicológico é uma função muito complexa. Em uma simples operação aritmética estão envolvidos diversos processos neurocognitivos que envolvem os processamentos verbais, espaciais, gráficos, atenção e memória. Objetivo: Este estudo teve por objetivo verificar o desempenho de indivíduos saudáveis, no processamento numérico e de cálculo, através da bateria EC 301 e verificar as interferências do sexo, da idade e da escolaridade no desempenho destes indivíduos. Método: Foram avaliados 44 sujeitos normais sem queixas e/ou alterações neurológicas. Resultados: o nível educacional mostrou-se fortemente relacionado ao desempenho obtido na maioria das provas da bateria EC 301, enquanto em relação ao sexo e idade não foram encontradas diferenças. Conclusão: os dados encontrados na população avaliada neste estudo mostraram que o nível educacional pode influenciar o desempenho do processamento numérico e de cálculo, sendo possível observar que a bateria EC 301 mostrou-se sensível para avaliar estas habilidades, podendo assim ser utilizada na avaliação clínica dos distúrbios numéricos e de cálculo. The ability to calculate is an extremely complex cognitive procedure. It consists of multifactorial processes, including verbal and spatial abilities, memory and executive functions 1 . realization of mathematical calculations can be impaired in cases of cerebral dysfunction and/or injuries 2-6 as well as in dementias 7,8 . The loss of the ability to perform calculation tasks resulting from a cerebral pathology is known as acalculia or acquired dyscalculia.

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Differential Contributions of the Left and Right Inferior Parietal Lobules to Number Processing

Cited by 524 publications

References 49 publications

Neural correlates of quantity processing of numeral classifiers.

Neural correlates of quantity processing of numeral classifiers.

Neural correlates of numbers and mathematical terms

Performance of a Brazilian population in the EC 301 calculation and number processing battery: a pilot study

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